NL192519B - Werkwijze voor het bereiden van zeer zuiver formaldehyde. - Google Patents

Werkwijze voor het bereiden van zeer zuiver formaldehyde.

Info

Publication number
NL192519B
NL192519B NL8900865A NL8900865A NL192519B NL 192519 B NL192519 B NL 192519B NL 8900865 A NL8900865 A NL 8900865A NL 8900865 A NL8900865 A NL 8900865A NL 192519 B NL192519 B NL 192519B
Authority
NL
Netherlands
Prior art keywords
preparation
high purity
purity formaldehyde
formaldehyde
purity
Prior art date
Application number
NL8900865A
Other languages
English (en)
Other versions
NL8900865A (nl
NL192519C (nl
Original Assignee
Asahi Chemical Ind
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Chemical Ind filed Critical Asahi Chemical Ind
Publication of NL8900865A publication Critical patent/NL8900865A/nl
Publication of NL192519B publication Critical patent/NL192519B/nl
Application granted granted Critical
Publication of NL192519C publication Critical patent/NL192519C/nl

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C47/00—Compounds having —CHO groups
    • C07C47/02—Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen
    • C07C47/04—Formaldehyde
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
    • C07C45/83—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation by extractive distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C47/00—Compounds having —CHO groups
    • C07C47/38—Unsaturated compounds having —CHO groups bound to carbon atoms of rings other than six—membered aromatic rings
    • C07C47/45—Unsaturated compounds having —CHO groups bound to carbon atoms of rings other than six—membered aromatic rings having unsaturation outside the rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
NL8900865A 1988-04-07 1989-04-07 Werkwijze voor het bereiden van zeer zuiver formaldehyde. NL192519C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8406388 1988-04-07
JP8406388 1988-04-07

Publications (3)

Publication Number Publication Date
NL8900865A NL8900865A (nl) 1989-11-01
NL192519B true NL192519B (nl) 1997-05-01
NL192519C NL192519C (nl) 1997-09-02

Family

ID=13820038

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8900865A NL192519C (nl) 1988-04-07 1989-04-07 Werkwijze voor het bereiden van zeer zuiver formaldehyde.

Country Status (4)

Country Link
US (1) US4962235A (nl)
KR (1) KR910006324B1 (nl)
GB (1) GB2218089B (nl)
NL (1) NL192519C (nl)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223102A (en) * 1992-03-03 1993-06-29 E. I. Du Pont De Nemours And Company Process for the electrooxidation of methanol to formaldehyde and methylal
GB9812083D0 (en) 1998-06-05 1998-08-05 Ici Plc Removal of water
US9499512B2 (en) 2011-11-24 2016-11-22 Ticona Gmbh Process for producing a cyclic acetal in a heterogeneous reaction system
JP2021519781A (ja) 2018-03-29 2021-08-12 セラニーズ・セールス・ジャーマニー・ゲーエムベーハー 不均一反応系における環状アセタールの製造方法
CN109369607B (zh) * 2018-11-15 2023-08-01 凯瑞环保科技股份有限公司 一种共沸催化反应合成三聚甲醛的装置和方法
CN112479846A (zh) * 2020-11-27 2021-03-12 潍坊惠丰化工有限公司 一种溶剂直接吸收法生产无水甲醛的工艺方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2943701A (en) * 1960-07-05 Effect of chso oonoenteation in the chhf
US3217042A (en) * 1965-11-09 Purification of formaldehyde
US2678905A (en) * 1949-11-17 1954-05-18 Celanese Corp Purification of aqueous formaldehyde solutions by extractive distillation
US2780652A (en) * 1954-05-13 1957-02-05 Du Pont Preparation of high purity formaldehyde
NL263828A (nl) * 1960-06-14
DE1928633C3 (de) * 1969-06-06 1978-03-23 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von wasserarmen Lösungen von Formaldehyd
BE794046A (fr) * 1972-01-15 1973-07-16 Basf Ag Procede de preparation de solutions aqueuses de formaldehyde pauvres en methanol

Also Published As

Publication number Publication date
KR910006324B1 (ko) 1991-08-20
GB2218089A (en) 1989-11-08
GB2218089B (en) 1991-11-06
KR900016079A (ko) 1990-11-12
GB8907634D0 (en) 1989-05-17
NL8900865A (nl) 1989-11-01
NL192519C (nl) 1997-09-02
US4962235A (en) 1990-10-09

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Legal Events

Date Code Title Description
A1B A search report has been drawn up
BC A request for examination has been filed
V1 Lapsed because of non-payment of the annual fee

Effective date: 20051101